def test_ld_byte():
asm = """
LD V0, #12
EXIT
"""
emulator_debug = run_asm(asm)
assert emulator_debug.get("V0") == int("12", 16)
def test_shr():
asm = """
LD V0, #2
SHR V0
EXIT
"""
emulator_debug = run_asm(asm)
assert emulator_debug.get("V0") == 1
def test_shl():
asm = """
LD V0, #1
SHL V0
EXIT
"""
emulator_debug = run_asm(asm)
assert emulator_debug.get("V0") == 2
def test_add_byte():
asm = """
LD V0, #1
ADD V0, #1
EXIT
"""
emulator_debug = run_asm(asm)
assert emulator_debug.get("V0") == 2
def test_rnd_v0_is_zero():
asm = """
LD V0, #0
RND V0, #0
EXIT
"""
emulator_debug = run_asm(asm)
assert emulator_debug.get("V0") == 0
def test_rnd():
asm = """
LD V0, #0
RND V0, #f
EXIT
"""
emulator_debug = run_asm(asm)
assert emulator_debug.get("V0") != 0
def test_se_byte():
asm = """
LD V0, #1
SE V0, #1
LD V0, #2
EXIT
"""
emulator_debug = run_asm(asm)
assert emulator_debug.get("V0") == 1
def test_shl_with_first_bit_one():
asm = """
LD V0, #80
SHL V0
EXIT
"""
emulator_debug = run_asm(asm)
assert emulator_debug.get("V0") == 0
assert emulator_debug.get("VF") == 1
def test_or():
asm = """
LD V0, #1
LD V1, #3
OR V0, V1
EXIT
"""
emulator_debug = run_asm(asm)
assert emulator_debug.get("V0") == 3
def test_call():
asm = """
CALL test
EXIT
test: EXIT
"""
emulator_debug = run_asm(asm)
assert emulator_debug.get("PC") == 0x200 + 6
def test_ld_register():
asm = """
LD V0, #1
LD V1, #2
LD V0, V1
EXIT
"""
emulator_debug = run_asm(asm)
assert emulator_debug.get("V0") == int("2", 16)
def test_shr_with_last_bit_one():
asm = """
LD V0, #3
SHR V0
EXIT
"""
emulator_debug = run_asm(asm)
assert emulator_debug.get("V0") == 1
assert emulator_debug.get("VF") == 1
def test_sub_register():
asm = """
LD V0, #1
LD V1, #1
SUB V0, V1
EXIT
"""
emulator_debug = run_asm(asm)
assert emulator_debug.get("V0") == 0
def test_subn_not_borrow():
asm = """
LD V0, #1
LD V1, #2
SUBN V0, V1
EXIT
"""
emulator_debug = run_asm(asm)
assert emulator_debug.get("V0") == 1
assert emulator_debug.get("VF") == 1
def test_add_register_with_carry():
asm = """
LD V0, #1
LD V1, #FF
ADD V0, V1
EXIT
"""
emulator_debug = run_asm(asm)
assert emulator_debug.get("V0") == 0
assert emulator_debug.get("VF") == 1
def test_sub_register_with_carry():
asm = """
LD V0, #f
LD V1, #1
SUB V0, V1
EXIT
"""
emulator_debug = run_asm(asm)
assert emulator_debug.get("V0") == 14
assert emulator_debug.get("VF") == 1
def test_se_register():
asm = """
LD V0, #1
LD V1, #1
LD V3, #1
SE V0, V1
LD V3, #2
EXIT
"""
emulator_debug = run_asm(asm)
assert emulator_debug.get("V3") == 1
def test_jp():
asm = """
LD V0, #1
JP test
EXIT
test: LD V0, #2
EXIT
"""
emulator_debug = run_asm(asm)
assert emulator_debug.get("V0") == 2
assert emulator_debug.get("PC") == 0x200 + 8
def test_jp_with_v0():
# hex #204 + #2 is the EXIT row
asm = """
LD V0, #2
JP V0, #204
LD V0, #1
EXIT
"""
emulator_debug = run_asm(asm)
assert emulator_debug.get("V0") == 2
assert emulator_debug.get("PC") == 0x200 + 6